Thanks a lot! Sometimes the internet is just wizards. Nobody can convince me otherwise.

badspace has a RSS feed? I thought signing up for the newsletter was the only way

Clonezilla creates a 1:1 copy on the new drive. I went from 1 to 2 TB and had 1 TB of unallocated space left. You can use the space to increase other partitions or make new ones.

I did this a few weeks ago with two M.2 drives and just one slot on my motherboard.

• boot into clonezilla
• clone smaller drive onto the bigger one (I used and external enclosure via USB)
• shutdown and swap drives
• reboot into live medium
• resize partitions on the new drive with gparted
• reboot and check/adjust UEFI settings if needed

As for migration, you might be able to create a degraded pool initially, copy over the data, and add the parity disk last.

I actually asked in the TrueNAS forum about this idea. According to some knowledgeable users this might work. For anyone interested, details here. The next major release (planned for end of October), should make this easier.

I tried ProtonVPN and got a refund, because their Linux implementation is lacking